Those commits are unrelated.
Please try the following build here, we need to write a proper fix but it should be semi-fixed.
Here a image with the proper fix:
https://test.coreelec.org/Portisch/CoreELEC-Amlogic-ng.arm-9.2-devel-1585564608.tar
Please have a try. If this is ok it goes into nightly!
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Hi @Portisch thank you.
âCoreELEC-Amlogic-ng.arm-9.2-devel-1585564608.tarâ This image works well.
No video stuttering after 20 minutes test good video.
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Ill test this one tonight, will be watching a bit.
Ok update from me, so far perfect, not had 1 slowdown in anything i have watched.
Also i am not sure if its a placebo effect, but i have suffered from a strange shimmering on every tv i have ever owed. currently on number 5. Almost like small artifacts, this has also vanished. I have not had such smooth playback since my old acer revo 3700 years ago.
Not sure what you have done, but i am keeping this version FOREVER!
I ran 20200328 nightly for around another 12 hours and it continued to be flawless.
I am couple of hours into testing 1585564608 and have seen 4 occurrences, 3 lasting no more than a second and the other around 2 seconds, all auto correcting.
Like roden, I did notice a very slight but noticeable improvement in video quality, with colours being more vibrant.
Will report more after a few more hours.
Another 4 hours use and no further issues.
With the colour improvement, it made me wonder about Tone Mapping HDR to SDR and I found that the quality of 4K HDR is a little improved, not being as dark as before. Tonights nightly also shows the improvement.
Still on 608, did not realise there were more improvements 
All changes are in 20200330, the test image got deleted.
There was also a change in h264 if gaps are found in the frame stream.
We donât know if this fix will lead to new issues - so please carefully check if all is working as it should.
thx
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After 6 hours use of 20200330 itâs working like a dream.
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Just updated, will test later.
Sorry got busy, will test tonight.
Iâm using 31 Mar nightly on my N2. After a few hours of watching an old SD TV show (H.264), I noticed cadence had become choppy. After 5mins it was still bothering me. Cured after a reboot.
Also, before the reboot I had paused the video and clicked on the screenshot button⌠the box locked up, screen went black, and eventually it rebooted itself into Safe Mode.
UPDATE: the next night⌠no problems noticed⌠I watched 3x SD TV shows, 1x HD TV SHOW, and 1x 4K movie.
I keep getting to busy to test, one of or let us know?
For me the problem is resolved and all subsequent nightlyâs have run fine, without issue.
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Same here, itâs working great, using 20200402. Thank you very much!
Great, thats sorted then.
After the changes I have a problem with dirty H264 sources. Older versions showed a few artifacts, the last ones give a black picture and I can only go back if I replay the file. The black screen only affects the decoding of the video, because GUI continues to run smoothly. I hope I was able to express myself clearly using google translate.
Please upload a sample.
Sample (30.62MB)
https://www.mediafire.com/file/hx8sumendecbfdc/sample.mkv/file
Maybe someone can use this sample to reproduce my problem with the black screen.
I tried CoreELEC-Amlogic-ng arm-9 2-nightly 20200410 and my problem seems to be gone. It works like a charm.
Thanks for the great work